Home / 641,947.76-886,810.68-512,716.56

Finding the Fourth Proportional to 641,947.76, 886,810.68 and 512,716.56

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Solution

The fourth proportional to 641,947.76, 886,810.68 and 512,716.56 is: 708,285.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,947.76 : 886,810.68 = 512,716.56 : x
  2. Step 2: Convert to fraction form
    641,947.76/886,810.68 = 512,716.56/x
  3. Step 3: Cross multiply
    641,947.76x = 886,810.68 × 512,716.56
  4. Step 4: Simplify right side
    641,947.76x = 454,682,521,220.86
  5. Step 5: Solve for x
    x = 454,682,521,220.86/641,947.76
  6. Step 6: Final answer
    x = 708,285.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.